[ND] dataSourceServiceExecuteException

[Rajneesh Garg]

Hi there!   I am working on ND 5.0 woth Oracle 8i as database.   My project is running normal usually, but it just throw the following error sometimes. Sometimes, id I refresh that page, it goes away otherwise it stays. What does this error message signifies? How can I get away from this type of error? Please help.   Rajneesh Garg mailto:[EMAIL PROTECTED]   ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------   Software Messages :   spider.event.adapters.CSpDataObjectEventAdapter.relayGenericEventProcessing: Unexpected exception from an event (java.lang.NullPointerException). This is when invoking method this_onAfterExecuteEvent for event spider.event.CSpDataObjectEvent [ON_AFTER_EXECUTE_EVENT, DBRequest=[EC-[offset=0, count=10, whence=B], SQL=|SELECT table1.field1, table2.field1, table2.field2, table3.field1, table1.field2  FROM table1, table2, table3  WHERE table1.field1=table3.field1 AND table2.field1=table2.field2], DBResults=[S-[SUCCESS(0)], T-[rows=10, cols=6, firstRowIndex=0]], dataSourceServiceExecuteException=|null|] on doGroupSearch:   spider.event.adapters.CSpDataObjectEventAdapter.relayGenericEventProcessing: Unexpected Exception (java.lang.NullPointerException) caught. Top of stack: |java.lang.NullPointerException         at ProjectName.doGroupSearch.this_onAfterExecuteEvent(Compiled Code)         at java.lang.reflect.Method.invoke(Native Method)         at spider.event.adapters.CSpEventAdapter.relayGenericEventProcessing(Compiled Code)         at spider.event.adapters.CSpEventAdapter.relayGenericEvent(Compiled Code)         at spider.event.adapters.CSpDataObjectEventAdapter.onAfterExecuteEvent(Compiled Code)         at spider.database.CSpDataObject.processDataObjectEvent(Compiled Code)         at spider.database.CSpDataObject.processEvent(Compiled Code)         at spider.CSpFileBased.dispatchEvent(Compiled Code)         at spider.database.CSpDataObject.execute(Compiled Code)         at spider.database.CSpDataObject.execute(Compiled Code)         at spider.database.CSpDataObject.execute(Compiled Code)         at spider.visual.CSpDataDrivenVisual.executeAllRetrievingDataObjects(Compiled Code)         at spider.visual.CSpDataDrivenVisual.display(Compiled Code)         at spider.visual.CSpRepeated.display(Compiled Code)         at spider.visual.CSpDataDrivenVisual.display(Compiled Code)         at spider.visual.CSpCommonHtmlPage.display(Compiled Code)         at spider.visual.CSpCommonHtmlPage.display(Compiled Code)         at spider.visual.CSpCommonPage.display(Compiled Code)         at spider.visual.CSpCommonPage.displayFirst(Compiled Code)         at spider.visual.CSpCommonPage.displayFirst(Compiled Code)         at spider.visual.CSpCommonPage.load(Compiled Code)         at spider.visual.CSpCommonHtmlPage.load(Compiled Code)         at spider.control.CSpWebEventProcessor.loadThePage(CSpWebEventProcessor.java:1056)         at spider.control.CSpWebEventProcessor.callThisMethod(Compiled Code)         at spider.control.CSpWebEventProcessor.run(Compiled Code)         at netdyn.services.cp.worker.CNdCPWorkerImpl.webEventMessage(Compiled Code)         at netdyn.services.cp.stubs._tie_INdCPWorker.webEventMessage(Compiled Code)         at netdyn.services.cp.stubs._INdCPWorkerImplBase._execute(Compiled Code)         at netdyn.services.cp.stubs._INdCPWorkerImplBase._execute(Compiled Code)         at com.visigenic.vbroker.orb.SkeletonDelegateImpl.execute(Compiled Code)         at com.visigenic.vbroker.orb.GiopProtocolAdapter.doRequest(Compiled Code)         at com.visigenic.vbroker.orb.GiopProtocolAdapter.dispatchMessage(Compiled Code)         at com.visigenic.vbroker.orb.ThreadPoolDispatcher.run(Compiled Code)         at com.visigenic.vbroker.orb.WorkerThread.run(Compiled Code) |